docs: def multiput(self, objs, **params):
          """
          Stores objects in parallel via threads.
  
          :param objs: the objects to store
          :type objs: list of `RiakObject <riak.riak_object.RiakObject>`
          :param params: additional request flags, e.g. w, dw, pw
          :type params: dict
          :rtype: list of boolean or
              :class:`RiakObjects <riak.riak_object.RiakObject>`,
          """
          if self._multiput_pool:
              params['pool'] = self._multiput_pool
          return riak.client.multi.multiput(self, objs, **params)